/* -*- mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
 *
 * ft897.c - (C) Tomi Manninen 2003 (oh2bns@sral.fi)
 *           (C) Stephane Fillod 2009
 *
 *  ...derived but heavily modified from:
 *
 * ft817.c - (C) Chris Karpinsky 2001 (aa1vl@arrl.net)
 *
 * This shared library provides an API for communicating
 * via serial interface to an FT-897 using the "CAT" interface.
 * The starting point for this code was Frank's ft847 implementation.
 *
 *
 *   This library is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *   Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

/*
 * Unimplemented features supported by the FT-897:
 *
 *   - RIT ON/OFF without touching the RIT offset. This would
 *     need frontend support (eg. a new RIG_FUNC_xxx)
 *
 *   - DCS encoder/squelch ON/OFF, similar to RIG_FUNC_TONE/TSQL.
 *     Needs frontend support.
 *
 *   - RX status command returns info that is not used:
 *
 *      - discriminator centered (yes/no flag)
 *      - received ctcss/dcs matched (yes/no flag)
 *
 * The manual also indicates that CTCSS and DCS codes can be set
 * separately for tx and rx, but this doesn't seem to work. It
 * doesn't work from front panel either.
 *
 * DONE (--sf):
 *
 *   - VFO A/B toggle. Needs frontend support (RIG_OP_TOGGLE)
 *
 *   - Split ON/OFF. Maybe some sort of split operation could
 *     be supported with this and the above???
 *
 *   - TX status command returns info that is not used:
 *
 *      - split on/off flag
 *      - high swr flag
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdlib.h>
#include <string.h>  	/* String function definitions */
#include <unistd.h>  	/* UNIX standard function definitions */

#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif

#include "hamlib/rig.h"
#include "serial.h"
#include "yaesu.h"
#include "ft897.h"
#include "misc.h"
#include "tones.h"
#include "bandplan.h"


static int ft897_init(RIG *rig);
static int ft897_open(RIG *rig);
static int ft897_cleanup(RIG *rig);
static int ft897_close(RIG *rig);
static int ft897_set_freq(RIG *rig, vfo_t vfo, freq_t freq);
static int ft897_get_freq(RIG *rig, vfo_t vfo, freq_t *freq);
static int ft897_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width);
static int ft897_get_mode(RIG *rig, vfo_t vfo, rmode_t *mode, pbwidth_t *width);
// static int ft897_set_vfo(RIG *rig, vfo_t vfo);
// static int ft897_get_vfo(RIG *rig, vfo_t *vfo);
static int ft897_set_split_vfo(RIG *rig, vfo_t vfo, split_t split, vfo_t tx_vfo);
static int ft897_get_split_vfo(RIG *rig, vfo_t vfo, split_t *split, vfo_t *tx_vfo);
static int ft897_vfo_op(RIG *rig, vfo_t vfo, vfo_op_t op);
static int ft897_set_ptt(RIG *rig, vfo_t vfo, ptt_t ptt);
static int ft897_get_ptt(RIG *rig, vfo_t vfo, ptt_t *ptt);
// static int ft897_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val);
static int ft897_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val);
static int ft897_set_func(RIG *rig, vfo_t vfo, setting_t func, int status);
// static int ft897_get_func(RIG *rig, vfo_t vfo, setting_t func, int *status);
// static int ft897_set_parm(RIG *rig, setting_t parm, value_t val);
// static int ft897_get_parm(RIG *rig, setting_t parm, value_t *val);
static int ft897_set_dcs_code(RIG *rig, vfo_t vfo, tone_t code);
static int ft897_set_ctcss_tone(RIG *rig, vfo_t vfo, tone_t code);
static int ft897_set_dcs_sql(RIG *rig, vfo_t vfo, tone_t code);
static int ft897_set_ctcss_sql(RIG *rig, vfo_t vfo, tone_t tone);
static int ft897_set_rptr_shift(RIG *rig, vfo_t vfo, rptr_shift_t rptr_shift);
static int ft897_set_rptr_offs(RIG *rig, vfo_t vfo, shortfreq_t offs);
static int ft897_set_rit(RIG *rig, vfo_t vfo, shortfreq_t rit);
static int ft897_get_dcd(RIG *rig, vfo_t vfo, dcd_t *dcd);
// static int ft897_set_powerstat(RIG *rig, powerstat_t status);

/* Native ft897 cmd set prototypes. These are READ ONLY as each */
/* rig instance will copy from these and modify if required . */
/* Complete sequences (1) can be read and used directly as a cmd sequence . */
/* Incomplete sequences (0) must be completed with extra parameters */
/* eg: mem number, or freq etc.. */

static const yaesu_cmd_set_t ncmd[] = {
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x00 } }, /* lock on */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x80 } }, /* lock off */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x08 } }, /* ptt on */
  { 1, { 0x00, 0x00, 0x00, 0x01, 0x88 } }, /* ptt off */
  { 0, { 0x00, 0x00, 0x00, 0x00, 0x01 } }, /* set freq */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x07 } }, /* mode set main LSB */
  { 1, { 0x01, 0x00, 0x00, 0x00, 0x07 } }, /* mode set main USB */
  { 1, { 0x02, 0x00, 0x00, 0x00, 0x07 } }, /* mode set main CW */
  { 1, { 0x03, 0x00, 0x00, 0x00, 0x07 } }, /* mode set main CWR */
  { 1, { 0x04, 0x00, 0x00, 0x00, 0x07 } }, /* mode set main AM */
  { 1, { 0x08, 0x00, 0x00, 0x00, 0x07 } }, /* mode set main FM */
  { 1, { 0x88, 0x00, 0x00, 0x00, 0x07 } }, /* mode set main FM-N */
  { 1, { 0x0a, 0x00, 0x00, 0x00, 0x07 } }, /* mode set main DIG */
  { 1, { 0x0c, 0x00, 0x00, 0x00, 0x07 } }, /* mode set main PKT */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x05 } }, /* clar on */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x85 } }, /* clar off */
  { 0, { 0x00, 0x00, 0x00, 0x00, 0xf5 } }, /* set clar freq */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x81 } }, /* toggle vfo a/b */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x02 } }, /* split on */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x82 } }, /* split off */
  { 1, { 0x09, 0x00, 0x00, 0x00, 0x09 } }, /* set RPT shift MINUS */
  { 1, { 0x49, 0x00, 0x00, 0x00, 0x09 } }, /* set RPT shift PLUS */
  { 1, { 0x89, 0x00, 0x00, 0x00, 0x09 } }, /* set RPT shift SIMPLEX */
  { 0, { 0x00, 0x00, 0x00, 0x00, 0xf9 } }, /* set RPT offset freq */
  { 1, { 0x0a, 0x00, 0x00, 0x00, 0x0a } }, /* set DCS on */
  { 1, { 0x0b, 0x00, 0x00, 0x00, 0x0a } }, /* set DCS decoder on */
  { 1, { 0x0c, 0x00, 0x00, 0x00, 0x0a } }, /* set DCS encoder on */
  { 1, { 0x2a, 0x00, 0x00, 0x00, 0x0a } }, /* set CTCSS on */
  { 1, { 0x3a, 0x00, 0x00, 0x00, 0x0a } }, /* set CTCSS decoder on */
  { 1, { 0x4a, 0x00, 0x00, 0x00, 0x0a } }, /* set CTCSS encoder on */
  { 1, { 0x8a, 0x00, 0x00, 0x00, 0x0a } }, /* set CTCSS/DCS off */
  { 0, { 0x00, 0x00, 0x00, 0x00, 0x0b } }, /* set CTCSS tone */
  { 0, { 0x00, 0x00, 0x00, 0x00, 0x0c } }, /* set DCS code */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0xe7 } }, /* get RX status  */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0xf7 } }, /* get TX status  */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x03 } }, /* get FREQ and MODE status */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x00 } }, /* pwr wakeup sequence */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x0f } }, /* pwr on */
  { 1, { 0x00, 0x00, 0x00, 0x00, 0x8f } }, /* pwr off */
};


#define FT897_ALL_RX_MODES      (RIG_MODE_AM|RIG_MODE_CW|RIG_MODE_CWR|RIG_MODE_USB|\
                                 RIG_MODE_LSB|RIG_MODE_RTTY|RIG_MODE_FM)
#define FT897_SSB_CW_RX_MODES   (RIG_MODE_CW|RIG_MODE_CWR|RIG_MODE_USB|RIG_MODE_LSB)
#define FT897_AM_FM_RX_MODES    (RIG_MODE_AM|RIG_MODE_FM)

#define FT897_OTHER_TX_MODES    (RIG_MODE_AM|RIG_MODE_CW|RIG_MODE_USB|\
                                 RIG_MODE_LSB|RIG_MODE_RTTY|RIG_MODE_FM)
#define FT897_AM_TX_MODES       (RIG_MODE_AM)

#define FT897_VFO_ALL           (RIG_VFO_A|RIG_VFO_B)
#define FT897_ANTS              0

const struct rig_caps ft897_caps = {
  .rig_model = 		RIG_MODEL_FT897,
  .model_name = 	"FT-897",
  .mfg_name = 		"Yaesu",
  .version = 		"0.3.3",
  .copyright = 		"LGPL",
  .status = 		RIG_STATUS_BETA,
  .rig_type = 		RIG_TYPE_TRANSCEIVER,
  .ptt_type = 		RIG_PTT_RIG,
  .dcd_type = 		RIG_DCD_RIG,
  .port_type = 		RIG_PORT_SERIAL,
  .serial_rate_min = 	4800,
  .serial_rate_max = 	38400,
  .serial_data_bits = 	8,
  .serial_stop_bits = 	2,
  .serial_parity = 	RIG_PARITY_NONE,
  .serial_handshake = 	RIG_HANDSHAKE_NONE,
  .write_delay = 	FT897_WRITE_DELAY,
  .post_write_delay = 	FT897_POST_WRITE_DELAY,
  .timeout = 		FT897_TIMEOUT,
  .retry = 		0,
  .has_get_func =       RIG_FUNC_NONE,
  .has_set_func = 	RIG_FUNC_LOCK | RIG_FUNC_TONE | RIG_FUNC_TSQL,
  .has_get_level = 	RIG_LEVEL_STRENGTH | RIG_LEVEL_RFPOWER | RIG_LEVEL_SWR | RIG_LEVEL_RAWSTR,
  .has_set_level = 	RIG_LEVEL_NONE,
  .has_get_parm = 	RIG_PARM_NONE,
  .has_set_parm = 	RIG_PARM_NONE,
  .level_gran = 	{},                     /* granularity */
  .parm_gran = 		{},
  .ctcss_list = 	common_ctcss_list,
  .dcs_list = 		common_dcs_list,   /* only 104 supported */
  .preamp = 		{ RIG_DBLST_END, },
  .attenuator = 	{ RIG_DBLST_END, },
  .max_rit = 		Hz(9990),
  .max_xit = 		Hz(0),
  .max_ifshift = 	Hz(0),
  .targetable_vfo = 	0,
  .transceive = 	RIG_TRN_OFF,
  .bank_qty = 		0,
  .chan_desc_sz = 	0,
  .chan_list =          { RIG_CHAN_END, },
  .vfo_ops =		RIG_OP_TOGGLE,

  .rx_range_list1 =  {
    {kHz(100),MHz(56), FT897_ALL_RX_MODES,-1,-1},
    {MHz(76), MHz(108),RIG_MODE_WFM,      -1,-1},
    {MHz(118),MHz(164),FT897_ALL_RX_MODES,-1,-1},
    {MHz(420),MHz(470),FT897_ALL_RX_MODES,-1,-1},
    RIG_FRNG_END,
  },
  .tx_range_list1 =  {
    FRQ_RNG_HF(1,FT897_OTHER_TX_MODES, W(10),W(100),FT897_VFO_ALL,FT897_ANTS),
    /* AM class */
    FRQ_RNG_HF(1,FT897_AM_TX_MODES, W(2.5),W(25),FT897_VFO_ALL,FT897_ANTS),
    FRQ_RNG_2m(1,FT897_OTHER_TX_MODES, W(5),W(50),FT897_VFO_ALL,FT897_ANTS),
    /* AM class */
    FRQ_RNG_2m(1,FT897_AM_TX_MODES, W(2.5),W(25),FT897_VFO_ALL,FT897_ANTS),
    FRQ_RNG_70cm(1,FT897_OTHER_TX_MODES, W(2),W(20),FT897_VFO_ALL,FT897_ANTS),
    /* AM class */
    FRQ_RNG_70cm(1,FT897_AM_TX_MODES, W(0.5),W(5),FT897_VFO_ALL,FT897_ANTS),
    RIG_FRNG_END,
  },


  .rx_range_list2 =  {
    {kHz(100),MHz(56), FT897_ALL_RX_MODES,-1,-1},
    {MHz(76), MHz(108),RIG_MODE_WFM,      -1,-1},
    {MHz(118),MHz(164),FT897_ALL_RX_MODES,-1,-1},
    {MHz(420),MHz(470),FT897_ALL_RX_MODES,-1,-1},
    RIG_FRNG_END,
  },
  .tx_range_list2 =  {
    FRQ_RNG_HF(2,FT897_OTHER_TX_MODES, W(10),W(100),FT897_VFO_ALL,FT897_ANTS),
    /* AM class */
    FRQ_RNG_HF(2,FT897_AM_TX_MODES, W(2.5),W(25),FT897_VFO_ALL,FT897_ANTS),
    FRQ_RNG_2m(2,FT897_OTHER_TX_MODES, W(5),W(50),FT897_VFO_ALL,FT897_ANTS),
    /* AM class */
    FRQ_RNG_2m(2,FT897_AM_TX_MODES, W(2.5),W(25),FT897_VFO_ALL,FT897_ANTS),
    FRQ_RNG_70cm(2,FT897_OTHER_TX_MODES, W(2),W(20),FT897_VFO_ALL,FT897_ANTS),
    /* AM class */
    FRQ_RNG_70cm(2,FT897_AM_TX_MODES, W(0.5),W(5),FT897_VFO_ALL,FT897_ANTS),
    RIG_FRNG_END,
  },

  .tuning_steps =  {
    {FT897_SSB_CW_RX_MODES,10},
    {FT897_SSB_CW_RX_MODES,100},
    {FT897_AM_FM_RX_MODES,10},
    {FT897_AM_FM_RX_MODES,100},
    RIG_TS_END,
  },

  /* filter selection is not supported by CAT functions
   * per testing by Rich Newsom, WA4SXZ
   */
  .filters =  {
//        {RIG_MODE_SSB, kHz(2.2)},
//        {RIG_MODE_CW, kHz(2.2)},
//        {RIG_MODE_CWR, kHz(2.2)},
//        {RIG_MODE_RTTY, kHz(2.2)},
//        {RIG_MODE_AM, kHz(6)},
//        {RIG_MODE_FM, kHz(15)},
//        {RIG_MODE_PKTFM, kHz(15)},
//        {RIG_MODE_FM, kHz(9)},
//        {RIG_MODE_PKTFM, kHz(9)},
//        {RIG_MODE_WFM, kHz(230)},	/* ?? */
        RIG_FLT_END,
    },

  .priv = 		NULL,
  .rig_init = 		ft897_init,
  .rig_cleanup = 	ft897_cleanup,
  .rig_open = 		ft897_open,
  .rig_close = 		ft897_close,
  .set_freq = 		ft897_set_freq,
  .get_freq = 		ft897_get_freq,
  .set_mode = 		ft897_set_mode,
  .get_mode = 		ft897_get_mode,
  .set_vfo = 		NULL,
  .get_vfo = 		NULL,
  .set_ptt = 		ft897_set_ptt,
  .get_ptt = 		ft897_get_ptt,
  .get_dcd = 		ft897_get_dcd,
  .set_rptr_shift = 	ft897_set_rptr_shift,
  .get_rptr_shift = 	NULL,
  .set_rptr_offs = 	ft897_set_rptr_offs,
  .get_rptr_offs = 	NULL,
  .set_split_freq = 	NULL,
  .get_split_freq = 	NULL,
  .set_split_mode = 	NULL,
  .get_split_mode = 	NULL,
  .set_split_vfo =	ft897_set_split_vfo,
  .get_split_vfo =	ft897_get_split_vfo,
  .set_rit = 		ft897_set_rit,
  .get_rit = 		NULL,
  .set_xit = 		NULL,
  .get_xit = 		NULL,
  .set_ts = 		NULL,
  .get_ts = 		NULL,
  .set_dcs_code = 	ft897_set_dcs_code,
  .get_dcs_code = 	NULL,
  .set_ctcss_tone = 	ft897_set_ctcss_tone,
  .get_ctcss_tone = 	NULL,
  .set_dcs_sql = 	ft897_set_dcs_sql,
  .get_dcs_sql = 	NULL,
  .set_ctcss_sql = 	ft897_set_ctcss_sql,
  .get_ctcss_sql = 	NULL,
  .set_powerstat = 	NULL,
  .get_powerstat = 	NULL,
  .reset = 		NULL,
  .set_ant = 		NULL,
  .get_ant = 		NULL,
  .set_level = 		NULL,
  .get_level = 		ft897_get_level,
  .set_func = 		ft897_set_func,
  .get_func = 		NULL,
  .set_parm = 		NULL,
  .get_parm = 		NULL,
  .vfo_op =		ft897_vfo_op,
};

/* ---------------------------------------------------------------------- */

int ft897_init(RIG *rig)
{
  struct ft897_priv_data *p;

  rig_debug(RIG_DEBUG_VERBOSE,"ft897:ft897_init called \n");

  if ((p = calloc(1, sizeof(struct ft897_priv_data))) == NULL)
    return -RIG_ENOMEM;

  /* Copy complete native cmd set to private cmd storage area */
  memcpy(p->pcs, ncmd, sizeof(ncmd));

  rig->state.priv = (void*) p;

  return RIG_OK;
}

int ft897_cleanup(RIG *rig)
{
  rig_debug(RIG_DEBUG_VERBOSE,"ft897:ft897_cleanup called \n");

  if (rig->state.priv)
    free(rig->state.priv);
  rig->state.priv = NULL;

  return RIG_OK;
}

int ft897_open(RIG *rig)
{
  rig_debug(RIG_DEBUG_VERBOSE,"ft897:ft897_open called \n");

  return RIG_OK;
}

int ft897_close(RIG *rig)
{
  rig_debug(RIG_DEBUG_VERBOSE,"ft897:ft897_close called \n");

  return RIG_OK;
}

/* ---------------------------------------------------------------------- */

static inline long timediff(struct timeval *tv1, struct timeval *tv2)
{
  struct timeval tv;

  tv.tv_usec = tv1->tv_usec - tv2->tv_usec;
  tv.tv_sec  = tv1->tv_sec  - tv2->tv_sec;

  return ((tv.tv_sec * 1000L) + (tv.tv_usec / 1000L));
}

static int check_cache_timeout(struct timeval *tv)
{
  struct timeval curr;
  long t;

  if (tv->tv_sec == 0 && tv->tv_usec == 0) {
    rig_debug(RIG_DEBUG_VERBOSE, "ft897: cache invalid\n");
    return 1;
  }

  gettimeofday(&curr, NULL);

  if ((t = timediff(&curr, tv)) < FT897_CACHE_TIMEOUT) {
    rig_debug(RIG_DEBUG_VERBOSE, "ft897: using cache (%ld ms)\n", t);
    return 0;
  } else {
    rig_debug(RIG_DEBUG_VERBOSE, "ft897: cache timed out (%ld ms)\n", t);
    return 1;
  }
}

static int ft897_get_status(RIG *rig, int status)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  struct timeval *tv;
  unsigned char *data;
  int len;
  int n;

  switch (status) {
  case FT897_NATIVE_CAT_GET_FREQ_MODE_STATUS:
    data = p->fm_status;
    len  = YAESU_CMD_LENGTH;
    tv   = &p->fm_status_tv;
    break;
  case FT897_NATIVE_CAT_GET_RX_STATUS:
    data = &p->rx_status;
    len  = 1;
    tv   = &p->rx_status_tv;
    break;
  case FT897_NATIVE_CAT_GET_TX_STATUS:
    data = &p->tx_status;
    len  = 1;
    tv   = &p->tx_status_tv;
    break;
  default:
    rig_debug(RIG_DEBUG_ERR, "ft897_get_status: Internal error!\n");
    return -RIG_EINTERNAL;
  }

  serial_flush(&rig->state.rigport);

  write_block(&rig->state.rigport, (char *) p->pcs[status].nseq, YAESU_CMD_LENGTH);

  if ((n = read_block(&rig->state.rigport, (char *) data, len)) < 0)
    return n;

  if (n != len)
    return -RIG_EIO;

  gettimeofday(tv, NULL);

  return RIG_OK;
}

/* ---------------------------------------------------------------------- */

int ft897_get_freq(RIG *rig, vfo_t vfo, freq_t *freq)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  int n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  if (check_cache_timeout(&p->fm_status_tv))
    if ((n = ft897_get_status(rig, FT897_NATIVE_CAT_GET_FREQ_MODE_STATUS)) < 0)
      return n;

  *freq = from_bcd_be(p->fm_status, 8) * 10;

  return -RIG_OK;
}

int ft897_get_mode(RIG *rig, vfo_t vfo, rmode_t *mode, pbwidth_t *width)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  int n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  if (check_cache_timeout(&p->fm_status_tv))
    if ((n = ft897_get_status(rig, FT897_NATIVE_CAT_GET_FREQ_MODE_STATUS)) < 0)
      return n;

  switch (p->fm_status[4]) {
  case 0x00:
    *mode = RIG_MODE_LSB;
    break;
  case 0x01:
    *mode = RIG_MODE_USB;
    break;
  case 0x02:
  case 0x82:
    *mode = RIG_MODE_CW;
    break;
  case 0x03:
  case 0x83:
    *mode = RIG_MODE_CWR;
    break;
  case 0x04:
    *mode = RIG_MODE_AM;
    break;
  case 0x06:
    *mode = RIG_MODE_WFM;
    break;
  case 0x08:
  case 0x88:
    *mode = RIG_MODE_FM;
    break;
  case 0x0a:
  case 0x8a:
    *mode = RIG_MODE_RTTY;
    break;
  case 0x0c:
  case 0x8c:
    *mode = RIG_MODE_PKTFM;
    break;
  default:
    *mode = RIG_MODE_NONE;
  }

  *width = RIG_PASSBAND_NORMAL;

  return RIG_OK;
}

int ft897_get_ptt(RIG *rig, vfo_t vfo, ptt_t *ptt)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  int n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  if (check_cache_timeout(&p->tx_status_tv))
    if ((n = ft897_get_status(rig, FT897_NATIVE_CAT_GET_TX_STATUS)) < 0)
      return n;

  *ptt = ((p->tx_status & 0x80) == 0);

  return RIG_OK;
}

static int ft897_get_pometer_level(RIG *rig, value_t *val)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  int n;

  if (check_cache_timeout(&p->tx_status_tv))
    if ((n = ft897_get_status(rig, FT897_NATIVE_CAT_GET_TX_STATUS)) < 0)
      return n;

  /* Valid only if PTT is on */
  if ((p->tx_status & 0x80) == 0)
    val->f = ((p->tx_status & 0x0F) / 15.0);
  else
    val->f = 0.0;

  return RIG_OK;
}

static int ft897_get_swr_level(RIG *rig, value_t *val)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  int n;

  if (check_cache_timeout(&p->tx_status_tv))
    if ((n = ft897_get_status(rig, FT897_NATIVE_CAT_GET_TX_STATUS)) < 0)
      return n;

  /* Valid only if PTT is on */
  if ((p->tx_status & 0x80) == 0)
    val->f = p->tx_status & 0x40 ? 30.0 : 1.0;	/* or infinity? */
  else
    val->f = 0.0;

  return RIG_OK;
}

static int ft897_get_smeter_level(RIG *rig, value_t *val)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  int n;

  if (check_cache_timeout(&p->rx_status_tv))
    if ((n = ft897_get_status(rig, FT897_NATIVE_CAT_GET_RX_STATUS)) < 0)
      return n;

  n = (p->rx_status & 0x0F) - 9;

  val->i = n * ((n > 0) ? 10 : 6);

  return RIG_OK;
}

static int ft897_get_rawstr_level(RIG *rig, value_t *val)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  int n;

  if (check_cache_timeout(&p->rx_status_tv))
    if ((n = ft897_get_status(rig, FT897_NATIVE_CAT_GET_RX_STATUS)) < 0)
      return n;

  val->i = p->rx_status & 0x0F;

  return RIG_OK;
}

int ft897_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val)
{
  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  switch (level) {
  case RIG_LEVEL_STRENGTH:
    return ft897_get_smeter_level(rig, val);

  case RIG_LEVEL_RAWSTR:
    return ft897_get_rawstr_level(rig, val);

  case RIG_LEVEL_RFPOWER:
    return ft897_get_pometer_level(rig, val);

  case RIG_LEVEL_SWR:
    return ft897_get_swr_level(rig, val);

  default:
    return -RIG_EINVAL;
  }

  return RIG_OK;
}

int ft897_get_dcd(RIG *rig, vfo_t vfo, dcd_t *dcd)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  int n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  if (check_cache_timeout(&p->rx_status_tv))
    if ((n = ft897_get_status(rig, FT897_NATIVE_CAT_GET_RX_STATUS)) < 0)
      return n;

  /* TODO: consider bit 6 too ??? (CTCSS/DCS code match) */
  if (p->rx_status & 0x80)
    *dcd = RIG_DCD_OFF;
  else
    *dcd = RIG_DCD_ON;

  return RIG_OK;
}

/* ---------------------------------------------------------------------- */

static int ft897_read_ack(RIG *rig)
{
#if (FT897_POST_WRITE_DELAY == 0)
  char dummy;
  int n;

  if ((n = read_block(&rig->state.rigport, &dummy, 1)) < 0) {
    rig_debug(RIG_DEBUG_ERR, "ft897: error reading ack\n");
    return n;
  }

  rig_debug(RIG_DEBUG_TRACE,"ft897: ack received (%d)\n", dummy);

  if (dummy != 0)
    return -RIG_ERJCTED;
#endif

  return RIG_OK;
}

/*
 * private helper function to send a private command sequence.
 * Must only be complete sequences.
 */
static int ft897_send_cmd(RIG *rig, int index)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;

  if (p->pcs[index].ncomp == 0) {
    rig_debug(RIG_DEBUG_VERBOSE, "ft897: Incomplete sequence\n");
    return -RIG_EINTERNAL;
  }

  write_block(&rig->state.rigport, (char *) p->pcs[index].nseq, YAESU_CMD_LENGTH);
  return ft897_read_ack(rig);
}

/*
 * The same for incomplete commands.
 */
static int ft897_send_icmd(RIG *rig, int index, unsigned char *data)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  unsigned char cmd[YAESU_CMD_LENGTH];

  if (p->pcs[index].ncomp == 1) {
    rig_debug(RIG_DEBUG_VERBOSE, "ft897: Complete sequence\n");
    return -RIG_EINTERNAL;
  }

  cmd[YAESU_CMD_LENGTH - 1] = p->pcs[index].nseq[YAESU_CMD_LENGTH - 1];
  memcpy(cmd, data, YAESU_CMD_LENGTH - 1);

  write_block(&rig->state.rigport, (char *) cmd, YAESU_CMD_LENGTH);
  return ft897_read_ack(rig);
}

/* ---------------------------------------------------------------------- */

int ft897_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
{
  unsigned char data[YAESU_CMD_LENGTH - 1];

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE,"ft897: requested freq = %"PRIfreq" Hz\n", freq);

  /* fill in the frequency */
  to_bcd_be(data, (freq + 5) / 10, 8);

  return ft897_send_icmd(rig, FT897_NATIVE_CAT_SET_FREQ, data);
}

int ft897_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
{
  int index;	/* index of sequence to send */

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE,"ft897: generic mode = %x \n", mode);

  switch(mode) {
  case RIG_MODE_AM:
    index = FT897_NATIVE_CAT_SET_MODE_AM;
    break;
  case RIG_MODE_CW:
    index = FT897_NATIVE_CAT_SET_MODE_CW;
    break;
  case RIG_MODE_USB:
    index = FT897_NATIVE_CAT_SET_MODE_USB;
    break;
  case RIG_MODE_LSB:
    index = FT897_NATIVE_CAT_SET_MODE_LSB;
    break;
  case RIG_MODE_RTTY:
    index = FT897_NATIVE_CAT_SET_MODE_DIG;
    break;
  case RIG_MODE_FM:
    index = FT897_NATIVE_CAT_SET_MODE_FM;
    break;
  case RIG_MODE_WFM:
    index = FT897_NATIVE_CAT_SET_MODE_FM;
    break;
  case RIG_MODE_CWR:
    index = FT897_NATIVE_CAT_SET_MODE_CWR;
    break;
  case RIG_MODE_PKTFM:
    index = FT897_NATIVE_CAT_SET_MODE_PKT;
    break;
  default:
    return -RIG_EINVAL;
  }

  if (width != RIG_PASSBAND_NORMAL)
    return -RIG_EINVAL;

  return ft897_send_cmd(rig, index);
}

int ft897_set_ptt(RIG *rig, vfo_t vfo, ptt_t ptt)
{
  int index, n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE, "ft897: ft897_set_ptt called\n");

  switch(ptt) {
  case RIG_PTT_ON:
    index = FT897_NATIVE_CAT_PTT_ON;
    break;
  case RIG_PTT_OFF:
    index = FT897_NATIVE_CAT_PTT_OFF;
    break;
  default:
    return -RIG_EINVAL;
  }

  n = ft897_send_cmd(rig, index);

  if (n < 0 && n != -RIG_ERJCTED)
    return n;

  return RIG_OK;
}

int ft897_vfo_op(RIG *rig, vfo_t vfo, vfo_op_t op)
{
  int index, n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE, "ft897: ft897_vfo_op called\n");

  switch (op) {
  case RIG_OP_TOGGLE:
    index = FT897_NATIVE_CAT_SET_VFOAB;
    break;
  default:
    return -RIG_EINVAL;
  }

  n = ft897_send_cmd(rig, index);

  if (n < 0 && n != -RIG_ERJCTED)
    return n;

  return RIG_OK;
}

int ft897_set_split_vfo(RIG *rig, vfo_t vfo, split_t split, vfo_t tx_vfo)
{
  int index, n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE, "ft897: ft897_set_split_vfo called\n");

  switch(split) {
  case RIG_SPLIT_OFF:
    index = FT897_NATIVE_CAT_SPLIT_OFF;
    break;
  case RIG_SPLIT_ON:
    index = FT897_NATIVE_CAT_SPLIT_ON;
    break;
  default:
    return -RIG_EINVAL;
  }

  n = ft897_send_cmd(rig, index);

  if (n < 0 && n != -RIG_ERJCTED)
    return n;

  return RIG_OK;
}

int ft897_get_split_vfo(RIG *rig, vfo_t vfo, split_t *split, vfo_t *tx_vfo)
{
  struct ft897_priv_data *p = (struct ft897_priv_data *) rig->state.priv;
  int n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  if (check_cache_timeout(&p->tx_status_tv))
    if ((n = ft897_get_status(rig, FT897_NATIVE_CAT_GET_TX_STATUS)) < 0)
      return n;

  *split = ((p->tx_status & 0x20) == 0) ? RIG_SPLIT_ON : RIG_SPLIT_OFF;

  return RIG_OK;
}

int ft897_set_func(RIG *rig, vfo_t vfo, setting_t func, int status)
{
  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  switch (func) {
  case RIG_FUNC_LOCK:
    if (status)
      return ft897_send_cmd(rig, FT897_NATIVE_CAT_LOCK_ON);
    else
      return ft897_send_cmd(rig, FT897_NATIVE_CAT_LOCK_OFF);

  case RIG_FUNC_TONE:
    if (status)
      return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_ENC_ON);
    else
      return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_DCS_OFF);

  case RIG_FUNC_TSQL:
    if (status)
      return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_ON);
    else
      return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_DCS_OFF);

#if 0
  case RIG_FUNC_CODE:   /* this doesn't exist */
    if (status)
      return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_DCS_ENC_ON);
    else
      return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_DCS_OFF);

  case RIG_FUNC_DSQL:   /* this doesn't exist */
    if (status)
      return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_DCS_ON);
    else
      return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_DCS_OFF);
#endif

  default:
    return -RIG_EINVAL;
  }
}

int ft897_set_dcs_code(RIG *rig, vfo_t vfo, tone_t code)
{
  unsigned char data[YAESU_CMD_LENGTH - 1];
  int n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE, "ft897: set DCS code (%d)\n", code);

  if (code == 0)
    return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_DCS_OFF);

  /* fill in the DCS code - the rig doesn't support separate codes... */
  to_bcd_be(data,     code, 4);
  to_bcd_be(data + 2, code, 4);

  if ((n = ft897_send_icmd(rig, FT897_NATIVE_CAT_SET_DCS_CODE, data)) < 0)
    return n;

  return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_DCS_ENC_ON);
}

int ft897_set_ctcss_tone(RIG *rig, vfo_t vfo, tone_t tone)
{
  unsigned char data[YAESU_CMD_LENGTH - 1];
  int n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE, "ft897: set CTCSS tone (%.1f)\n", tone / 10.0);

  if (tone == 0)
    return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_DCS_OFF);

  /* fill in the CTCSS freq - the rig doesn't support separate tones... */
  to_bcd_be(data,     tone, 4);
  to_bcd_be(data + 2, tone, 4);

  if ((n = ft897_send_icmd(rig, FT897_NATIVE_CAT_SET_CTCSS_FREQ, data)) < 0)
    return n;

  return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_ENC_ON);
}

int ft897_set_dcs_sql(RIG *rig, vfo_t vfo, tone_t code)
{
  unsigned char data[YAESU_CMD_LENGTH - 1];
  int n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE, "ft897: set DCS sql (%d)\n", code);

  if (code == 0)
    return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_DCS_OFF);

  /* fill in the DCS code - the rig doesn't support separate codes... */
  to_bcd_be(data,     code, 4);
  to_bcd_be(data + 2, code, 4);

  if ((n = ft897_send_icmd(rig, FT897_NATIVE_CAT_SET_DCS_CODE, data)) < 0)
    return n;

  return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_DCS_ON);
}

int ft897_set_ctcss_sql(RIG *rig, vfo_t vfo, tone_t tone)
{
  unsigned char data[YAESU_CMD_LENGTH - 1];
  int n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE, "ft897: set CTCSS sql (%.1f)\n", tone / 10.0);

  if (tone == 0)
    return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_DCS_OFF);

  /* fill in the CTCSS freq - the rig doesn't support separate tones... */
  to_bcd_be(data,     tone, 4);
  to_bcd_be(data + 2, tone, 4);

  if ((n = ft897_send_icmd(rig, FT897_NATIVE_CAT_SET_CTCSS_FREQ, data)) < 0)
    return n;

  return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_CTCSS_ON);
}

int ft897_set_rptr_shift(RIG *rig, vfo_t vfo, rptr_shift_t shift)
{
  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE, "ft897: set repeter shift = %i\n", shift);

  switch (shift) {
  case RIG_RPT_SHIFT_NONE:
    return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_RPT_SHIFT_SIMPLEX);
  case RIG_RPT_SHIFT_MINUS:
    return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_RPT_SHIFT_MINUS);
  case RIG_RPT_SHIFT_PLUS:
    return ft897_send_cmd(rig, FT897_NATIVE_CAT_SET_RPT_SHIFT_PLUS);
  }

  return -RIG_EINVAL;
}

int ft897_set_rptr_offs(RIG *rig, vfo_t vfo, shortfreq_t offs)
{
  unsigned char data[YAESU_CMD_LENGTH - 1];

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE, "ft897: set repeter offs = %li\n", offs);

  /* fill in the offset freq */
  to_bcd_be(data, offs / 10, 8);

  return ft897_send_icmd(rig, FT897_NATIVE_CAT_SET_RPT_OFFSET, data);
}

int ft897_set_rit(RIG *rig, vfo_t vfo, shortfreq_t rit)
{
  unsigned char data[YAESU_CMD_LENGTH - 1];
  int n;

  if (vfo != RIG_VFO_CURR)
    return -RIG_ENTARGET;

  rig_debug(RIG_DEBUG_VERBOSE, "ft897: set rit = %li)\n", rit);

  /* fill in the RIT freq */
  data[0] = (rit < 0) ? 255 : 0;
  data[1] = 0;
  to_bcd_be(data + 2, labs(rit) / 10, 4);

  if ((n = ft897_send_icmd(rig, FT897_NATIVE_CAT_SET_CLAR_FREQ, data)) < 0)
    return n;

  /* the rig rejects if these are repeated - don't confuse user with retcode */
  if (rit == 0)
    ft897_send_cmd(rig, FT897_NATIVE_CAT_CLAR_OFF);
  else
    ft897_send_cmd(rig, FT897_NATIVE_CAT_CLAR_ON);

  return RIG_OK;
}

#if 0
/*
 * This doesn't seem to work on FT897. It might work with FT817 though.
 */
int ft897_set_powerstat(RIG *rig, powerstat_t status)
{
  switch (status) {
  case RIG_POWER_OFF:
    return ft897_send_cmd(rig, FT897_NATIVE_CAT_PWR_OFF);
  case RIG_POWER_ON:
    return ft897_send_cmd(rig, FT897_NATIVE_CAT_PWR_ON);
  case RIG_POWER_STANDBY:
  default:
    return -RIG_EINVAL;
  }
}
#endif

/* ---------------------------------------------------------------------- */

